Closure and clamp for same



Dec. 924. 1,519,988

A. A. CLARK CLOSURE CLAMP FOR SAME Filed June 22, 1922 2 Sheets-Sheet 1 Dec. 6, 1924. 4 1,519,988

A. A. CLARK I CLOSURE AND CLAMP FOR SAME Filed June. 22, 1922 2 Sheets-Sheet 2 Baltimore, in the Patented Dec. 1%, 1924.

outrun STATES ALFRED A. CLARK, OI BALTIMORE, MARYLAND.

CLOSURE AND CLAMP FOR SAME.

Application filed. June 22, 1922. Serial No. 570,082.

T 0 all whom it may concern:

Be it ,known that I, ALFRED A. CLARK, a .citizen of the United States, residing at State of Maryland, have invented certain new and useful Improvements in Closures and Clamps for Same; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to closures and clamps for same.

Among the objects of my invention are:

To provide a closure for a receptacle so arranged that it may be readily applied to said receptacle and readily removed therefrom. I

To provide a closure and a clamp for same so arranged that the clamp will greatly stiffen the closure.

To provide a closure shaped in such a manner that maximum stiffness at the portion thereof adjacent the receptacle walls will be obtained.

To provide a closure having a recess and a liquid-tight packing of great resiliency mounted therein.

These and other objects of my invention will be adverted to in the followingspecification, reference being had to the accompanying drawings, and the means by which said objects are effectuated will be definitely pointed out in the claims.

- In the drawings Figure 1 is a side view of my improved closure and the clamps therefor, the closure being shown in place upon the receptacle and the clamps in the positions for holding said closure thereupon.

' Fig. 2 is a view. of the parts shown in Fig. 1 looking in the direction of the arrow 2 in said figure.

Fig. 3 is an enlarged section along the line 3-3 in Fig. 2 looking in the direction of the arrows.

Fig. 4 is a plan view of the packing used with my improved closure.

In the drawings 10 represents the receptacle which in the present instance would be square with rounded corners. The shape of the receptacle is not a portion of my invention and it may be varied as desired. Whatever the shape of the receptacle, it has a curved bea poses,

d the resilience of the stirrup 19 11 provided at the top thereof which may be re-enforced with the wire 12 if desired.

The closure 13 may be flat as shown in the drawings or may be provided with any suitable ribs for strengthening or other purbut however it is formed, it is to be provided with a U-shapcd flange 14 around the exterior thereof following the contour of the bead 11. The flange 14 not only serves to stiffen the closure 13 but also provides a recess, for the reception of the packing 15.

The packing 15 is a tube preferably of rubber which is shaped to the contour of the flange 1i and has its ends cemented together in any approved manner as at 16. The tube thus formed gives sufficient resiliency to prevent permanent deformation thereof by the action of the clamps hereinafter described. Should, however, it be desired to use my improved closure with a receptacle in which there is to be considerable pressure, the tube 16 may have a fluid under pressure introduced therein by any approved method.

My improved closure is secured to the receptacle by the following means 17 is a clamp preferably U-shaped in cross section to fit the flange 14. Ears such as 18 are formed upon the clamp 17 and the stirrup 19 is revolubly mounted therein.

The ends 24 of the stirrup 19 are revolubly mounted in holes provided in the handle 20. The stirrup 19 is connected to the top of the clamp 17 and -is provided with an off-set portion 21 for ya purpose hereinafter explained.

The handle 20 may be formed of sheet or cast metal and it is revolubly mounted upon the pivot 22 which is secured in the bracket 23. The bracket 23 is secured to'the recep tacle 10.

There may be any number of clamps employed to secure my improved closure in place but I preferably employ four as shown in the drawings and shape the clamps to fit the flange 14 so that the latter will be re-enforced near the middle thereof. By this means I obtain great stiffness of the closure. It is to be noted that the holes in the handle 20, in which the ends 24 of the stirrup 19 are mounted, are located so that when the handle 20 is in the position shown in Fig. 3 the line of stress between the ends 24 and the portion of the stirrup mounted in the ears 18 will pass to the left of the pivot 22; consequently, due to the llU ofi-set 21 will ieldingly hold the lower end of said handle in contact with the receptacle 10 and will thus prevent the inadvert ent release of the clamp 17, and will also. provide a yielding pressure for said clamp. The pressure otthe clamp 17 will force the packing 15- against the head 11 and deform the wall 0 the packing against the resistance of the material thereof. and the fluid in the interior thereof thus insuring a liquid-tight joint between the head 11 an the packing 15.

When itis desired to remove the closure 13 the handle 20 is to be turned in a counterclockwise direction, (see Fig. 3) thus moving the ends 24 upwardly and releasing the clamp 17 from the flange 14. The clamp 17 can thenbe moved toward the right, (see Fig. 3), from the flange 14 and the closure 13 removed from the'receptacle 10. When it is desired to replace the closure 13 it is placed upon the receptacle 10, the clamp 17 is moved over the flange 14 and the handle 20 depressed to the position shown in Fig 3. While I have shown four clamps applied to the closure 13 it is to be understood that two of same may be omitted, ifthe closure 13 is made of sufliciently stifl' metal.

While I have shown the clamps as'applied to a square receptacle it is evident that theymay be applied to a receptacle of any other shape and having either plain .or curved bounding surfaces.

Thus it will be noted that I rovide a closure havingan exceedingly stifl ange provided with an efiicient form of packing at ceptacle and insures a coptiniral pressurebetween the packing and the receptacle. By

the latter means I obtaina liquid-tight seal-- 1 ing of the receptacle which is maintained eventhough some of the parts should change in shape due to stress thereupon, or become slightly deformed in use.

While I have shown one preferred embodiment of my improved closure. and, clamp, I

ture.

it is to be understood that this is for purposes of illustration only for changes may be made therein without departing from the spirit of my invention.

2 The combination of a closure having a U-shaped flange formed around the periphery. thereof, with a receptacle comprising an opening having a bead registering with said flange, U-shaped clamps movably secured to said receptacle and embracing said flange and means for pressing said clamps upon said flange.

3. The combination of a closure having a U-shaped flange formed around the periphery thereof, with a receptacle comprising an opening having a bead'registering with said flange, clam s movably secured to said receptacle and. embracing said flange and yielding means for pressing. said clamp upon said closure. u .4. The combination of a closure having a U-shaped flange formed aroundthe periphery thereof, with areceptacle comprising an said flange, clamps for pressing said closure agalnst said receptacle, handles pivotally mounted on said receptacle and stirrups connectin said handles and clamps.

5. T e combination of a closure having a U-sha d flange formed around the periphery t ereof, with a receptacle comprising an opening having a bead registering with saidflange, clamps for pressmg said closure against said receptacle, handles pivotally mounted on said receptacle and res'ilient stirrups connecting said handles and clamps- In testimony'whereo f, I afiix my signa- ALFRED A. GLARK.

opening having a bead registering with 

